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Z564
Z564 – Open lavage of peritoneal cavity for diagnosis without manual exploration of peritoneal cavity
OHIP Psychiatric Code — DIGESTIVE SYSTEM SURGICAL PROCEDURES · Schedule of Benefits
Open lavage of peritoneal cavity for diagnosis without manual exploration of peritoneal cavity.
When to Use
- Use Z564 for diagnostic peritoneal lavage (DPL) performed via a small incision when the intent is strictly to obtain fluid for analysis without performing a formal laparotomy or manual exploration.
- Select Z564 when the procedure is limited to the insertion of a catheter for lavage and subsequent fluid retrieval for diagnostic purposes in trauma or suspected peritonitis cases.
Common Pitfalls
- Billing Z564 in conjunction with a formal laparotomy or exploratory procedure is a common audit trigger; if manual exploration occurs, Z564 is not the appropriate code.
- Failure to document the specific diagnostic nature of the lavage can lead to claims being flagged as incomplete, as the code explicitly excludes manual exploration.
Billing Tips
- Ensure the operative report clearly states that no manual exploration was performed to justify the use of Z564 over more comprehensive surgical codes.
- If the procedure is performed on an emergency basis after hours, ensure the appropriate after-hours premium (E409 or E410) is applied, as Z564 is a surgical procedure eligible for these premiums.
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